- Postcode districts
- CM13, CM14, CM15
- Nearby
- Billericay, Hornchurch and Romford
- Guide price
- £265–£650
- Typical time on site
- half a day
- Water
- Very hard across most of Essex
- Survey
- Free, at your home
What does a bathroom extractor fan cost in Brentwood?
Guide price in Brentwood: £265–£650 including VAT, depending on the room and what you choose. We adjust the national guide for East of England, where prices are typically about 6% above the UK average. The figure depends on the size of the room, whether anything moves, and the products you pick.
Extractor fan
- Fan with timer or humidistat
Inline fan
- Ducting to a roof or soffit vent
Continuous extract
- Good for windowless rooms
Guide prices for Brentwood including VAT. Your itemised written quote after the free survey is the price that counts.
Working in Brentwood
We work right across Brentwood — CM13, CM14 and CM15 — and in neighbouring Billericay and Hornchurch.
In Brentwood, as anywhere, the age of the house decides a lot: pipe sizes, floor construction and where the soil stack runs. In Brentwood flats, a new vent through an outside wall may need freeholder consent, so we raise it at the survey. If your Brentwood bathroom has black mould on the ceiling or silicone, the fan and its duct are the first things we check.
Supplies across most of Essex are very hard. Steam carries that scale onto mirrors and glass, so a fan that clears the room quickly helps on both counts. Hardness varies street by street, so check the figure for your postcode with your water supplier.
What the job includes
- A fan chosen to meet the bathroom extract rate: 15 l/s intermittent or 8 l/s continuous
- Rigid or semi-rigid ducting kept short and straight, and insulated where it crosses a cold loft
- Wiring by a qualified electrician, with an isolator outside the room and RCD protection
- Making good around the fan and checking that it extracts properly at the grille
Decisions to make first
Axial, centrifugal or inline
Axial fans suit short, straight runs; centrifugal fans cope better with longer ducts; inline fans sit in the loft and are the quietest in the room.
Timer or humidistat
A timer keeps the fan running after the light goes off. A humidistat starts it whenever moisture rises, which suits rooms where people forget.
Rules that apply in England
In England, Approved Document F sets bathroom extract at 15 l/s for an intermittent fan or 8 l/s for continuous extract. Wiring a new fan alters a circuit in a room with a bath or shower, so it is notifiable under Part P.
